Find the next number in the sequence

5 12 24 36 ?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

What is the coolest letter in the alphabet?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

What does this mathematical rebus means ?

What is the fastest way to double your money?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

Before Mount Everest was discovered, what was the highest mountain in the world?

What is the difference between a jeweller and a jailer?

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?